JP2015087258A - Acicular magnetic metal body recovery device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized and lightweight acicular magnetic metal body recovery device of high detection efficiency and reliability capable of promptly detecting/recovering an acicular magnetic metal body through simple operation even in the case where the acicular magnetic metal body falls down onto a floor surface and moves to a corner of a room or under a shelf.SOLUTION: The acicular magnetic metal body recovery device includes a grip part 21 in one end of a shaft 20 and a recovery unit 1 for recovering the acicular magnetic metal body in another end and is movable longitudinally and laterally. The recovery unit 1 includes: a columnar magnetic substance metal attraction member 11 formed by alternately laminating a plurality of permanent magnet plates and magnetic plates for magnetically attracting the acicular magnetic metal body; a cylindrical casing 12 in which the columnar magnetic substance metal attraction member 11 is accommodated in a freely rotatable manner and which is fixed to the shaft 20 so as not to be rotated; a sensor part 3 for detecting the recovery of the acicular magnetic metal body; and wheels 14 which are provided at both sides of the casing 12 in a freely rotatable manner.

Description

  The present invention relates to a needle-shaped magnetic metal body recovery device, and more particularly, to a needle-shaped magnetic metal body represented by a medical suture needle, anastomosis needle, or pin that has dropped and lost on the floor (hereinafter referred to as needle-shaped magnetic metal body). It is related with the acicular magnetic metal body collection | recovery apparatus which can detect collection | recovery simultaneously.

  Conventionally, when a needle-shaped magnetic metal body is dropped on the floor surface during surgery, in order to recover it, the face is often brought close to the floor surface and the floor surface is searched with the naked eye. In particular, needle-shaped magnetic metal bodies that are used to suture blood vessels and nerves called anastomosis needles are less than 3 mm in length and less than 0.1 mm in thickness. It is extremely difficult to find a metal body with the naked eye, which is a very labor-intensive work.

  The main material of suture needles and anastomosis needles used for medical purposes is austenitic stainless steel, which is a non-magnetic material, but is weakly magnetized during processing and is attracted to a magnet. Thus, it has been proposed to collect the needle-like magnetic metal body that has fallen on the floor surface by using a recovery device equipped with a strong permanent magnet as shown in FIG. 15 (for example, Patent Document 1, 2). According to such an apparatus, it becomes possible to simply adsorb the above-mentioned extremely small-sized needle-like magnetic metal body to the magnet of the apparatus.

Japanese Patent Publication No. 2006-245397 Utility model registration No. 3068451

  However, the recovery device as described above does not have a function of detecting the magnetic adsorption of the minute acicular magnetic metal body, and confirms on the spot whether the acicular magnetic metal body is adsorbed on the magnet. Therefore, it is necessary to carry out complicated work such as frequently performing the confirmation visually. In addition, the fine acicular magnetic metal body is weak in magnetism, and even if a strong magnet is used, the attracting force is small. Therefore, the acicular magnetic metal body may be dropped again during the collection operation.

  Furthermore, liquids such as blood, body fluids, and physiological saline may adhere to the floor of the operating field. Most of these liquids are electrolytes, and these liquids may be an obstacle to detection when electrically detecting a needle-like magnetic metal body. In addition, fine iron powder produced by using surgical tools such as iron sand and iron drills brought in from the outside exists on the floor of the operating field. These minute magnetic metal bodies also make it more difficult to detect needle-like magnetic bodies.

  In the above situation, it is conceivable to perform metal exploration as a method for detecting whether or not the acicular magnetic metal body is recovered. However, in a general metal exploration method using electromagnetic induction, the eddy current generated by the needle-like magnetic metal body itself having a length of several millimeters is very small and difficult to detect. The magnetic metal body cannot be recovered.

  The present invention has been made in view of the above problems, and even when a needle-like magnetic metal body falls on the floor surface and moves to the corner of a room or under a shelf, it can be quickly operated with a simple operation. It is an object of the present invention to provide a small, lightweight, acicular magnetic metal body recovery device that can be recovered and detected.

  According to this invention, the acicular magnetic metal body collection | recovery apparatus shown below is provided.

  1stly, it is a acicular magnetic metal body collection | recovery apparatus which can be moved back and forth and right and left provided with the collection | recovery unit which equips one end of a shaft with a holding | grip part at the other end, and collect | recovers acicular magnetic metal bodies, Is a cylindrical magnetic metal adsorbing member in which a plurality of permanent magnet plates and magnetic plates are alternately stacked for magnetically adsorbing the acicular magnetic metal body, and the cylindrical magnetic metal adsorbing member is rotated inside. A cylindrical housing that is movably accommodated and fixed so as not to rotate with respect to the shaft, a sensor unit for detecting the recovery of the needle-shaped magnetic metal body, and both sides of the housing are rotatable. A pair of electrode portions composed of an anode and a cathode provided on at least a part of the outer peripheral surface of the housing, and needle-like magnets collected by magnetic adsorption via the housing A metal body straddles the anode and cathode. And when the anode and the cathode are short-circuited, a detection unit that detects the short-circuit and a notification unit that notifies the user that the acicular magnetic metal body has been detected based on the detection result of the detection unit. This is a needle-like magnetic metal body recovery device.

  Second, in the acicular magnetic metal body recovery device according to the first aspect of the present invention, the detection unit measures a voltage when the anode and the cathode are short-circuited, and a voltage when the measured value is generated due to adhesion of an electrolyte. When the value is in the range of 0.3 to 1.0 V, it is preferable to send the information to the notification unit, and the notification unit notifies that the electrolyte has adhered.

  Thirdly, in the acicular magnetic metal body recovery device according to the first or second invention, a stopper for restricting the movement of the columnar magnetic metal metal adsorbing member is provided on the inner upper portion of the casing. Is preferred.

  4thly, in the acicular magnetic metal body collection | recovery apparatus of the said 1st to 3rd invention, in order to make visibility of the acicular magnetic metal body collect | recovered on the electrode inside the said electrode, a light emitting member It is preferable to provide.

  Fifthly, in the acicular magnetic metal body recovery device according to any one of the first to fourth inventions, it is preferable that a guard member is provided on the outside of the housing in order to prevent damage to the electrode portion due to impact.

  Sixthly, in the acicular magnetic metal body recovery device according to any one of the first to fifth inventions, the electrode section includes a pair of long bipolar electrode structures each including an anode and a cathode, at least a part of the casing. It is preferable that the outer peripheral surface is spirally wound.

  Seventhly, in the acicular magnetic metal body recovery device according to any one of the first to fifth inventions, a tape-like bipolar electrode structure in which at least a plurality of pairs of anodes and cathodes of the electrode part are arranged in parallel is provided. It is preferable to provide at least a part of the outer peripheral surface of the housing.

  Eighth, in the acicular magnetic metal body recovery device according to any one of the first to fifth inventions, the electrode portion is formed such that the anode and the cathode form a comb-shaped electrode and is provided on at least a part of the outer peripheral surface of the casing. Is preferred.

  According to the acicular magnetic metal body recovery device of the present invention, even when the acicular magnetic metal body falls on the floor surface and moves to the corner of the room or under the shelf, it can be quickly and easily operated. It is possible to provide a small and lightweight acicular magnetic metal body recovery device that can recover and detect the recovery, which is highly efficient in detection and reliability.

It is a schematic perspective view which shows the structure of the acicular magnetic metal body collection | recovery apparatus of this invention. It is the schematic which shows the structure of a collection | recovery unit. It is a block diagram which shows the structure of a sensor part. It is a flowchart showing the process of a detection part. It is the schematic which shows the structure which provided the stopper. It is the schematic which shows the structure which provided the light emitting member. (A) is the schematic which shows the visual recognition state when not providing a light emitting member, (B) is the schematic which shows the visual recognition state when a light emitting member is provided. It is the schematic which shows the structure which provided the guard member. It is the schematic which shows the effect of a guard member. It is the schematic which shows the structure of a cylindrical magnetic metal adsorption member. It is a magnetic force distribution diagram of a cylindrical magnetic metal adsorbing member. It is the schematic which shows a tape-shaped bipolar electrode. It is the schematic which shows the tape-shaped bipolar electrode which arranged a pair of anode and cathode several sets in parallel. It is the schematic which shows the structure of a comb-shaped electrode. It is the schematic which shows the structure of the conventional magnetic metal collection | recovery apparatus.

  Hereinafter, an embodiment of a needle-like magnetic metal body recovery device according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic diagram showing the overall structure of a needle-like magnetic metal body recovery device according to the present invention. In this embodiment, the grip 20 is provided at one end of the shaft 20 and the recovery unit 1 is provided at the other end. The recovery unit 1 rotatably accommodates a columnar magnetic metal adsorbing member 11 for magnetically adsorbing the acicular magnetic metal body and a columnar magnetic metal adsorbing member 11 and is fixed to the shaft 20. A cylindrical housing 12, a sensor unit 3 for detecting the recovery of the acicular magnetic metal body, and wheels 14 provided rotatably on both sides of the housing 12 are provided.

  The columnar magnetic metal adsorbing member 11 in the casing 12 is located under the casing 12 due to gravity during operation, and the needle-like shape falling on the floor due to the magnetic force of the columnar magnetic metal adsorbing member 11. The magnetic metal body can be magnetically attracted onto the electrode portion 31 via the housing 12 and collected.

  The sensor unit 3 includes an electrode unit 31 including a pair of anodes and cathodes of the same kind of metal provided on at least a part of the outer peripheral surface of the housing 12, and in this electrode unit 31, the acicular magnetic metal body connects the anode and cathode. When straddling, a detection unit 33 that detects the presence or absence of the acicular magnetic metal body by detecting a short circuit, that is, a voltage change between the anode and the cathode caused by lowering the insulation between the electrodes, and a notification unit that notifies the detection It has. The housing 12 and the electrode unit 31 are fixed so as not to rotate with respect to the shaft 20.

  The cathode and the anode of the electrode part 31 are preferably provided at an angle with respect to the longitudinal direction of the housing 12. As a result, when the columnar magnetic metal adsorbing member accommodated in the housing 12 so as to rotate freely moves along with the movement of the recovery unit 1, the acicular magnetic metal adsorbed magnetically is also obtained. Since the electrode member 31 moves perpendicularly to the longitudinal direction of the housing 12, the acicular magnetic metal body is easily short-circuited across the anode and the cathode.

  Specifically, the sensor unit 3 that detects and notifies the magnetic adsorption of the acicular magnetic metal body is configured as shown in the block diagram of FIG.

  The sensor unit 3 includes a power supply unit 32, a detection unit 33, an electrode unit 31, and a notification unit 34. The power supply unit 32 includes a switch on / off function, and detects a voltage from the battery. And it stabilizes to the stable voltage (for example, 5V) required by the alerting | reporting part 34, and supplies it to each structure part.

  The detection unit 33 is configured by a microcomputer, and sends information to the notification unit 34 when a short circuit is confirmed by the electrode unit 31. Notification of detection by the notification unit 34 can be performed by character display, lighting of light, sound, vibration, and the like, and these notification methods can be appropriately set according to the situation.

  In addition, there are cases where liquids such as blood, body fluids, and physiological saline are attached to the floor of the operating field. Most of these liquids are electrolytes, and these liquids may be an obstacle to detection when electrically detecting a needle-like magnetic metal body.

  In order to deal with such a problem, in the present invention, the detection unit 33 measures the voltage when the anode and the cathode are short-circuited, for example, according to the procedure shown in the flowchart of FIG.

  When the electrolyte adheres to the electrode part 31, electrolysis of the electrolyte occurs due to conduction through the electrolyte between the anode and the cathode, and the voltage applied to the electrode itself decreases. The present invention utilizes this phenomenon, and when the measured value of the voltage is in the range of 0.3 to 1.0 V, which is a voltage value caused by the adhesion of the electrolyte, the information is sent to the notification unit. The notification unit notifies that the electrolyte has adhered.

  When the voltage is less than 0.3 V, it is assumed that the acicular magnetic metal body is detected, and the information is sent to the informing unit 34, and the informing unit 34 informs that the acicular magnetic metal body has been adsorbed.

  Furthermore, when the voltage of the battery used in the power supply unit 32 is measured and becomes a voltage value set as a stable voltage value to be supplied, for example, less than 2.4 V, it is possible to warn of battery consumption.

  In the acicular magnetic metal body recovery device of the present invention configured as described above, the power supply unit 32, the electrode unit 31, the detection unit 33, and the notification unit 34 that constitute the sensor unit 3 may be provided in the housing 12, In consideration of operability, visibility, and the like, the power supply unit 32, the detection unit 33, and the notification unit 34 other than the electrode unit 31 can be arranged in the vicinity of the grip unit 21 of the shaft 20 by wiring.

  The wheel 14 is rotatably mounted with the housing 12 of the recovery unit 1 as an axis, and the electrode portion 31 provided on at least a part of the outer peripheral surface of the housing 12 keeps a certain distance from the floor surface. It has become.

  For the wheel 14, a wheel 14 having a small rolling friction is used so that the moving operation can be performed smoothly. Further, the outer edge of the wheel 14 is protected by a soft rubber or resin so as to reduce vibration and sound during the rolling. preferable.

  In the operation of the needle-like magnetic metal body recovery device having the above-described configuration, the operator has the grip portion 21 provided at the tip of the shaft 20 and moves the recovery unit 1 attached to multiple ends on the floor surface. By this operation, the needle-like magnetic metal body dropped on the floor surface is magnetically adsorbed on the electrode portion 31 by the magnetic force of the cylindrical magnetic metal adsorbing member 11 and at the same time magnetically adsorbed across the anode and cathode of the electrode The detection unit 33 detects the magnetic adsorption of the needle-like magnetic metal body, and immediately notifies the operator by the notification unit 34.

  In addition, the distance from the collection unit 1 to the grip portion 21 can be appropriately changed according to the height of the worker, but is usually preferably 80 to 120 cm, and is searched on a desk or a work table. In the case of the purpose, the distance to the grip portion 21 can be set to 20 cm to 30 cm.

  In the present invention, the cylindrical magnetic metal adsorbing member 11 is accommodated so as to be rotatable inside the housing 12, but the acicular magnetic metal body is a magnetic force of the magnetic metal adsorbing member 11. When the magnetic adsorption is performed on the surface of the electrode portion 31 via the housing 12 by the case 12, when this is visually confirmed and excluded from the surface of the electrode portion 31, the needle 20 is placed with the shaft 20 down and the collection unit 1 up. In general, the top and bottom of the magnetic metal body recovery device is reversed. At this time, if the magnetic metal adsorbing member 11 rotates and comes to the attachment portion of the shaft 20, the acicular magnetic metal body recovered by magnetic adsorption may fall to the floor again.

  In consideration of such a situation, in the present invention, as shown in FIGS. 2 and 5, a stopper 15 is provided so that the magnetic metal adsorbing member 11 does not rotate on the mounting portion of the shaft 20 on the inner periphery of the housing 12. Can be provided. Thereby, even if it is a case where the top and bottom of the acicular magnetic metal body collection | recovery apparatus are reversed, the magnetic body metal adsorption | suction member 11 does not rotate to the inner peripheral part of the shaft 20 attachment part, but the magnetic body metal adsorption | suction member 11 This magnetic force is maintained at a portion other than the shaft 20 mounting portion, and the acicular magnetic metal body once recovered by magnetic adsorption does not fall on the floor again. Moreover, since the part which the magnetic metal adsorption member 11 does not rotate is provided by providing the stopper 15, it can be set as the design which accommodates wiring etc. in that part collectively.

  Furthermore, in the present invention, the light emitting member 4 can be provided inside the electrode portion 31 as shown in FIG. The light emitting member 4 is preferably thin and has a constant voltage. For example, an inorganic EL light emitting film can be suitably used.

  The light emitting member 4 is preferably provided between the surface of the housing 12 and the electrode portion 31. Moreover, the housing | casing 12 can also be provided in the internal peripheral surface in the housing | casing 12 as a transparent member. The surface of the electrode part 31 shown in FIG. 7B in which the light emitting member 4 is provided inside the electrode part 31 is compared with the surface of the electrode part 31 shown in FIG. The silhouette of the needle-shaped magnetic metal body clearly appears and good visibility can be obtained. In addition, when providing the light emitting member 4 inside the electrode part 31, it is desirable for the base material of the electrode part 31 to use a translucent material.

  Further, in the acicular magnetic metal body recovery device of the present invention, a guard member 5 as shown in FIG. 8 can be provided on the outer periphery of the electrode portion in order to prevent damage to the electrode portion due to impact during operation. . The guard member 5 is detachably provided at the joint between the shaft 20 and the housing 12 and is designed to cover the front surface of the electrode portion 31 in the traveling direction. A bearing shaft 51 is provided at the tip of the guard member 5, and small-diameter wheels 52 are provided at both ends of the bearing shaft 51 so as to be in contact with the floor surface. The material of the guide member 5 is not particularly limited, but it is preferable to use a transparent material for grasping the state of the floor surface during use.

  By configuring the guard member 5 as described above, even when the needle-like magnetic metal body recovery device is operated, as shown in FIG. In addition, since the electrode portion 31 is protected, it is possible to prevent the housing 12 from being damaged, the electrode portion 31 from being damaged, the disconnection, and the like.

Hereinafter, each component of the acicular magnetic metal body recovery device will be described in more detail.
<Cylindrical magnetic metal adsorbing member>
FIG. 10 shows a configuration example of a columnar magnetic metal adsorbing member. In order to magnetically adsorb the acicular magnetic metal body on the electrode portion 31 in the sensor unit 3, the columnar magnetic metal metal adsorbing member 11 is used. The columnar magnetic metal adsorbing member 11 includes a permanent magnet plate 111 and a magnetic plate 112 that are alternately stacked in a direction orthogonal to the stacking axis direction to form a columnar body. A magnetic plate 112 is sandwiched between a plurality of laminated permanent magnet plates 111, and each permanent magnet plate 111 is disposed opposite to the same pole via the magnetic plate 112, thereby generating a magnetic flux on the thickness end face of the magnetic plate. It has a circuit.

  The cylindrical magnetic metal adsorbing member 11 used in the present invention is different in size, number of built-in magnets (pitch), etc. in order to efficiently adsorb the acicular magnetic metal body, but for the purpose of removing fine iron powder, etc. Therefore, it is widely used in fields such as metal sorting and recycling, food production, and spinning, and is generally not different from what is generally called a magnet bar and commercialized. The respective permanent magnet plates 111 are arranged to face each other through the magnetic plate 112 and have a high magnetic flux density in the magnetic plate 112. The permanent magnet plates 111 stacked via the magnetic plate 112 are stored in a non-magnetic storage container 113 such as aluminum or austenitic stainless steel in order to prevent structural collapse due to repulsive force.

  When the thickness W1 of each permanent magnet plate 111 constituting the columnar magnetic metal attracting member 11 is extremely long relative to the length of the acicular magnetic metal body to be attracted, only one magnetic pole is provided. The acicular magnetic metal body is easily adsorbed. This makes it easier for the needle-like magnetic metal body to stand upright and may cause a detection error. In order to solve such a problem, by making the length of the permanent magnet plate 111 approximately the same as the length of the acicular magnetic metal body, both ends of the acicular magnetic metal body are evenly pulled from each magnetic pole, The magnetic metal body can be magnetically adsorbed in a state where it is depressed on the surface of the electrode portion 31.

  As described above, among the needle-shaped magnetic metal bodies, medical suture needles and anastomosis needles are weak magnetic bodies. Therefore, the larger the magnetic flux density of the permanent magnet used for the columnar magnetic metal metal attracting member 11, the more reliably the needle. The magnetic metal body is magnetically adsorbed. In the present invention, the type of the permanent magnet plate 111 is not particularly limited as long as the magnetic force is strong. However, when considering downsizing of the apparatus, the energy is about 8 times stronger than the anisotropic ferrite magnet. It is preferable to use a neodymium magnet having a product and excellent mechanical strength. In this embodiment, a neodymium magnet having a size of φ9.5 mm × 5 mm and a magnetic flux density of 412 mT per magnet was used. However, as the magnetic flux density increases, the magnetic adsorption force increases and the detection efficiency increases. May be used.

  In order to effectively magnetically attract a small acicular magnetic metal body, the magnetic attraction force increases as the distance between the floor surface and the columnar magnetic metal metal adsorption member decreases. There is a risk of damage due to contact with the surface. Considering this point, the distance between the floor surface and the columnar magnetic metal adsorbing member is preferably 6 to 20 mm, and the electrode portion is disposed between them, and the distance between the electrode portion and the floor surface is 5 to 15 mm. preferable. The distance between the bottom surface of the recovery unit 1 and the floor surface can be adjusted by changing the diameter of the wheel 14 provided on the side surface of the housing.

  The thickness 25 in the stacking axis direction of the permanent magnet plate 111 used for the columnar magnetic metal attracting member 11 is determined based on the short target when the length of the target acicular magnetic metal body is about 3 mm. The thickness of the permanent magnet is preferably 2 mm to 6 mm. Note that a general steel material is used as the material of the magnetic plate 112 according to the present invention.

  Regarding the dimensions of the magnetic plate 112 constituting the columnar magnetic metal adsorbing member 11, similarly to the permanent magnet, when the magnetic plate thickness W 3 is extremely long, the magnetic force is dispersed on the magnetic plate 112. It becomes a factor which reduces the magnetic attraction force of the whole cylindrical magnetic metal adsorbing member. For this reason, the thickness W3 of the magnetic plate is preferably about 1 mm to 4 mm. Also, as shown in FIG. 10, by forming both ends of the columnar magnetic metal adsorbing member 11 as magnetic plates 112, the acicular magnetic metal body becomes a columnar magnetic body as shown in the magnetic force distribution diagram of FIG. Magnetic adsorption to both ends of the metal adsorption member 11 can be reduced.

The columnar magnetic metal adsorbing member 11 has a columnar shape so as to be rotatable inside the housing 12. In consideration of downsizing while maintaining the magnetic force of the entire columnar magnetic metal adsorbing member 111, the diameter D1 of the columnar magnetic metal adsorbing member 11 is preferably 8 mm to 20 mm. The length of the columnar magnetic metal adsorbing member can be easily changed by changing the number of layers (pitch) depending on the application. The length of the columnar magnetic metal adsorbing member is set to be equal to or less than the width of the detecting unit 33, thereby preventing the acicular magnetic metal body from being magnetically adsorbed in addition to the detecting unit 33. These lengths are preferably 100 mm to 500 mm, and more preferably 200 mm to 300 mm in view of the feeling of use.
<Electrode part>
The voltage applied to the electrode part 31 may have a resistance of several MΩ at the time of attracting the acicular magnetic metal body. Therefore, it is preferable to apply a higher voltage in order to detect a short circuit at the time of attracting more reliably. . However, since the electrode part is exposed due to the structure of the device, if the voltage is too high, a spark discharge may occur when it contacts the metal part of the furniture. Therefore, application in the range of 2 to 6 V which is the same as the voltage of the dry battery using the upper limit of the voltage is usually preferable.

  The interval between the anode and the cathode can be appropriately set according to the object to be detected. For example, when the needle-like magnetic metal body to be detected is an anastomosis needle having a length of 2 mm, each of the anode and the cathode of the electrode unit 31 It is preferable that the interval of is approximately half or less of the length of the acicular magnetic metal body. Furthermore, taking into account that the diameter of magnetic iron powder represented by sand iron, which causes false detection, is 0.05 mm to 0.2 mm, a space more than twice that of large iron particle iron is provided. Is preferably 0.4 to 1 mm.

  The angle of the electrode portion 31 with respect to the stacking axis direction of the columnar magnetic metal adsorbing member 11 is set to 15 ° so that the tip of the bent portion like a suture needle is not caught on the edge of the electrode during movement. It is preferable to set it to -45 degrees. The thickness of the electrode is also preferably 10 to 100 μm, and it is particularly preferable to make it as thin as possible in order to reduce the influence of catching. However, since the electrode is exposed, the thickness is more preferably about 50 μm so that it does not easily break even if it hits a hard corner during use.

  As a specific example of the electrode part 31 under the above conditions, for example, a flexible film made of polyimide resin having a thickness of 50 μm with a copper foil having a thickness of 10 to 100 μm attached is manufactured by photoetching, and after etching, a copper foil shape Depending on the application, those plated with various metals can be used.

The electrode unit 31 of the present invention can adopt various configurations as long as the above conditions are satisfied, but specifically, a tape-shaped bipolar electrode and a comb-shaped electrode can be preferably used. These details are described in detail below.
(Tape-shaped bipolar electrode)
FIG. 12 shows a schematic diagram of a tape-shaped bipolar electrode. This tape-shaped bipolar electrode 131 is formed by forming two pairs of an anode 133 and a cathode 134 arranged in parallel on a tape-shaped flexible film substrate. The tape-shaped bipolar electrode can be formed obliquely by winding it on the surface of the housing 12 in a spiral shape with an angle with respect to the rotation direction of the columnar magnetic metal adsorption member 11.

  The tape-shaped bipolar electrode 131 may be provided on the surface of the housing 12 by using one long tape-shaped bipolar electrode 131. However, as shown in FIG. Alternatively, a tape-like bipolar electrode 131 in which a plurality of sets of a pair of anode 133 and cathode 134 are arranged in parallel may be used.

By using the bipolar electrode structure 131 of this configuration wired as shown in FIG. 13, the cost can be reduced compared to the case of using one long tape-shaped bipolar electrode 131, For example, as shown in FIG. 13, even if a part of one set among a plurality of sets is disconnected, the detection can be made by another set.
(Comb electrode)
FIG. 14 is a schematic perspective view of the comb electrode 132. The comb-shaped electrode has a bipolar electrode structure in which an anode 133 and a cathode 134 are opposed to each other in parallel on an insulating substrate and are spaced apart in a comb shape. The protruding direction of the comb-shaped protrusions of the anode 133 and the cathode 134 facing each other is inclined with respect to the moving direction of the columnar magnetic metal adsorbing member 11. The width W3 of the comb-like projections is the same for both electrodes, and the spacing W4 between the projections of each electrode is insulated by a flexible insulating film base material. The energization necessary for detection occurs through the acicular magnetic metal body when the acicular magnetic metal body is in contact with both the anode 133 and the cathode 134.

  According to the needle-like magnetic metal body recovery device of the present invention configured as described above, even if the needle-like magnetic metal body falls on the floor surface and moves to the corner of the room or under the shelf, Thus, it is possible to provide a small, lightweight, acicular magnetic metal body recovery device that can be recovered quickly with a simple operation and can detect the recovery, with high detection efficiency and reliability.

  The acicular magnetic metal body recovery device of the present invention can be applied as a metal foreign matter removing device that detects when a magnetic metal foreign matter is magnetically adsorbed in a sewing factory or a milling line. In particular, with regard to the tape-shaped bipolar electrode, it is possible to add a detection function at low cost by winding it around a cylindrical magnetic metal adsorbing member attached to an existing apparatus.

DESCRIPTION OF SYMBOLS 1 Recovery unit 11 Cylindrical magnetic metal adsorbing member 111 Permanent magnet plate 112 Magnetic plate 113 Storage container 12 Housing | casing 13 Electrode part 131 Tape-shaped bipolar electrode 132 Comb-shaped electrode 133 Anode 134 Cathode 14 Wheel 15 Stopper 20 Shaft 21 Holding part DESCRIPTION OF SYMBOLS 3 Sensor part 31 Electrode part 32 Power supply part 33 Detection part 34 Notification part 4 Light emission member 5 Guard member 51 Bearing shaft 52 Small diameter wheel

Claims (8)

A needle-like magnetic metal body recovery device that is movable in the front-rear and left-right directions is provided with a gripping portion at one end of the shaft and a recovery unit for recovering the needle-like magnetic metal body at the other end,
The collection unit is
A columnar magnetic metal adsorbing member in which a plurality of permanent magnet plates and magnetic plates are alternately laminated for magnetically adsorbing acicular magnetic metal bodies,
A cylindrical housing that accommodates the cylindrical magnetic metal adsorbing member in a rotatable manner inside and is fixed so as not to rotate with respect to the shaft;
A sensor unit for detecting the recovery of the acicular magnetic metal body,
Provided on both sides of the housing with wheels provided rotatably,
A pair of electrode parts comprising an anode and a cathode, provided on the outer peripheral surface of at least a part of the housing;
When the acicular magnetic metal body recovered by magnetic adsorption through the casing is attached across the anode and the cathode and the anode and the cathode are short-circuited, a detection unit for detecting the short circuit, and the detection unit The acicular magnetic metal body collection | recovery apparatus characterized by having the alerting | reporting part which alert | reports to a user that the acicular magnetic metal body was detected based on this detection result.   When the detection unit measures a voltage when the anode and the cathode are short-circuited, and the measured value is a value in a range of 0.3 to 1.0 V, which is a voltage value caused by the adhesion of the electrolyte, 2. The acicular magnetic metal body recovery device according to claim 1, wherein information is sent to the notification unit, and the notification unit notifies that the electrolyte has adhered.   The needle-like magnetic metal body recovery device according to claim 1, wherein a stopper for restricting movement of the columnar magnetic metal metal adsorbing member is provided on an inner upper portion of the casing.   The acicular shape according to any one of claims 1 to 3, further comprising a light emitting member inside the electrode to improve the visibility of the acicular magnetic metal body collected on the electrode. Magnetic metal body recovery device.   The acicular magnetic metal body recovery device according to any one of claims 1 to 4, further comprising a guard member on the outside of the casing to prevent damage to the electrode portion due to an impact.   6. The electrode section is formed by spirally winding a pair of long bipolar electrode structures composed of an anode and a cathode around at least a part of the outer peripheral surface of the casing. The acicular magnetic metal body collection | recovery apparatus as described in any one of these.   The tape-shaped bipolar electrode structure in which at least a plurality of sets of a pair of anodes and cathodes of the electrode part are arranged in parallel is provided on at least a part of the outer peripheral surface of the casing. The acicular magnetic metal body collection | recovery apparatus as described in any one of these. The acicular magnetic metal according to any one of claims 1 to 5, wherein the electrode portion has an anode and a cathode that form a comb-shaped electrode and is provided on an outer peripheral surface of at least a part of the casing. Body recovery device.